It’s a little out of the way, but the Tempio Maggiore is so worth a visit for both its historical value and sheer magnificence. Nearly destroyed during World War II—local Italian partisans defused the bombs in the nick of time—the synagogue was built in the late 1880s for the local Shaphardi community. The interior, inspired by the architecture of southern Spain as well as the Hagia Sofia, is quite Moorish—full of rich mosaics, marble, and stained glass. The Tempio Maggiore is still in use today. Afterward, a visit to Ruth’s for the best kosher spread in town (with excellent vegetarian options) is mandatory.